Exactly as he said. The game is close to being ready for full release. This means people are going to want a subscribestar, or Patreon link so they can follow it for updates. Unfortunately, many of these sites now require you to have something posted before they will let you set up the page. So...
You are mistaken here. After the scene at the pond where they first have sex, it says the dad got sick a few months later. Then two years go by from the scene at the pond. So it's been about a year and a half since their father got sick. The family is still on the farm because Dad isn't dead...
I voted for number two, not all AVN players understand the difference between the three, in the original Japanese wording, but they do understand what NTR itself conitates. There is also the issue of what is considered, NTR, with the separate tags; NTR (Netorare), Sharing (with a male), Sharing...